APA (7th ed.) Citation

Chant, C., Holmes, R., & Koenig, W. J. (1978). Two centuries of warfare. Octopus Books.

Chicago Style (17th ed.) Citation

Chant, Christopher, Richard Holmes, and William J. Koenig. Two Centuries of Warfare. London: Octopus Books, 1978.

MLA (9th ed.) Citation

Chant, Christopher, et al. Two Centuries of Warfare. Octopus Books, 1978.